Latitudinal variation in phlorotannin contents from Southwestern Atlantic brown seaweeds.

abstract：:Complete, articulated crinoids from the Ordovician peri-Gondwanan margin are rare. Here, we describe a new species, Iocrinus africanus sp. nov., from the Darriwilian-age Taddrist Formation of Morocco. The anatomy of this species was studied using a combination of traditional palaeontological methods and non-destructiv...

journal_title：PeerJ

authors： Zamora S,Rahman IA,Ausich WI

更新日期：2015-12-07 00:00:00

abstract：Background:The circadian clock not only participates in regulating various stages of plant growth, development and metabolism, but confers plant environmental adaptability to stress such as drought. Pseudo-Response Regulators (PRRs) are important component of the central oscillator (the core of circadian clock) and pla...

journal_title：PeerJ

authors： Wang J,Du Z,Huo X,Zhou J,Chen Y,Zhang J,Pan A,Wang X,Wang F,Zhang J

更新日期：2020-09-25 00:00:00

abstract：:Fear is a response to a known threat, anxiety is a response to a perceived threat. Both of these affective states can be detrimental to animal welfare in modern housing environments. In comparison to the well-validated tests for assessing fear in laying hens, tests for measuring anxiety are less developed. Perception ...

journal_title：PeerJ

authors： Campbell DLM,Taylor PS,Hernandez CE,Stewart M,Belson S,Lee C

更新日期：2019-07-10 00:00:00

abstract：:Prion diseases are a group of fatal neurodegenerative disorders that affect humans and animals. They are characterized by the accumulation in the central nervous system of a pathological form of the host-encoded prion protein (PrP(C)). The prion protein is a membrane glycoprotein that consists of two domains: a globul...

journal_title：PeerJ

authors： Didonna A,Venturini AC,Hartman K,Vranac T,Čurin Šerbec V,Legname G

更新日期：2015-03-19 00:00:00

abstract：Background:Riparian corridors can affect nutrient, organic matter, and sediment transport, all of which shape water quality in streams and connected downstream waters. When functioning riparian corridors remain intact, they provide highly valued water quality ecosystem services. However, in rapidly urbanizing watershed...

journal_title：PeerJ

authors： Atkinson SF,Lake MC

更新日期：2020-02-04 00:00:00

abstract：:The study investigates the solution of the multicollinearity between certain body measurements of Romanov lambs and prediction of the body weight of Romanov lambs using the thus calculated factor analysis scores and a multiple regression model. For this purpose, the body measurements (wither height (WH), croup height ...

journal_title：PeerJ

authors： Tahtali Y

更新日期：2019-08-01 00:00:00

abstract：:Plasma membrane NADPH oxidases, also named respiratory burst oxidase homologues (Rbohs), play pivotal roles in many aspects of growth and development, as well as in responses to hormone signalings and various biotic and abiotic stresses. Although Rbohs family members have been identified in several plants, little is k...

journal_title：PeerJ

authors： Zhang G,Yue C,Lu T,Sun L,Hao F

更新日期：2020-01-17 00:00:00

abstract：Background:Acipenser dabryanus, an endemic Chinese species, has been listed as a first-class protected animal in China. Sturgeons are among the oldest and most primitive group of existing fish in the world and occupy a special place in the evolutionary history of fish. Thus, a study of the reproduction and sex differen...

journal_title：PeerJ

authors： Chen Y,Liu Y,Gong Q,Lai J,Song M,Du J,Deng X

更新日期：2018-07-27 00:00:00

abstract：:Background. Low molecular weight heparin (LMWH) is an effective anti-coagulant for thrombotic events. However, due to its predominant renal clearance, there are concerns that it might be associated with increased bleeding in patients with renal disease. Objectives. We systematically evaluated the efficacy and safety o...

journal_title：PeerJ

authors： Palamaner Subash Shantha G,Kumar AA,Sethi M,Khanna RC,Pancholy SB

更新日期：2015-03-10 00:00:00

abstract：:The genus Liolaemus is one of the most ecologically diverse and species-rich genera of lizards worldwide. It currently includes more than 250 recognized species, which have been subject to many ecological and evolutionary studies. Nevertheless, Liolaemus lizards have a complex taxonomic history, mainly due to the inco...

journal_title：PeerJ

authors： Panzera A,Leaché AD,D'Elía G,Victoriano PF

更新日期：2017-10-26 00:00:00

abstract：:Plasmid vectors based on bacteriophage integrases are important tools in molecular microbiology for the introduction of foreign DNA, especially into bacterial species where other systems for genetic manipulation are limited. Site specific integrases catalyze recombination between phage and bacterial attachment sites (...

journal_title：PeerJ

authors： Herisse M,Porter JL,Guerillot R,Tomita T,Goncalves Da Silva A,Seemann T,Howden BP,Stinear TP,Pidot SJ

更新日期：2018-05-04 00:00:00

abstract：:The use of baited remote underwater video (BRUV) for examining and monitoring marine biodiversity in temperate marine environments is rapidly growing, however many aspects of their effectiveness relies on assumptions based on studies from the Southern Hemisphere. The addition of bait to underwater camera systems acts ...

journal_title：PeerJ

authors： Jones RE,Griffin RA,Januchowski-Hartley SR,Unsworth RKF

更新日期：2020-08-27 00:00:00

abstract：:The vibrating reed frequency meter, originally employed by Békésy and later by Wilson as a cochlear model, uses a set of tuned reeds to represent the cochlea's graded bank of resonant elements and an elastic band threaded between them to provide nearest-neighbour coupling. Here the system, constructed of 21 reeds prog...

journal_title：PeerJ

authors： Bell A,Wit HP

更新日期：2015-10-13 00:00:00

abstract：:Engaging in effortful self-control can sometimes impair people's ability to resist subsequent temptations. Existing research has shown that when chronic dieters' self-regulatory capacity is challenged by prior exertion of effort, they demonstrate disinhibited eating and altered patterns of brain activity when exposed ...

journal_title：PeerJ

authors： Lopez RB,Courtney AL,Wagner DD

更新日期：2019-02-28 00:00:00

abstract：:Wing pigmentation in Calopteryx damselflies, caused by the deposition of melanin, is energetically expensive to produce and enhances predation risk. However, patterns of melanisation are used in species identification, greater pigmentation is an accurate signal of male immune function in at least some species, and the...

journal_title：PeerJ

authors： Hassall C

更新日期：2014-06-10 00:00:00

abstract：:Despite being geographically central to the Atlantic Americas Flyway for migratory birds, the Caribbean is often overlooked or underappreciated when addressing the conservation of North American shorebirds. To our knowledge, this is the first Caribbean-wide assessment of shorebird use in the region. We analyzed 211,01...

journal_title：PeerJ

authors： Cañizares JR,Reed JM

更新日期：2020-09-08 00:00:00

abstract：:Porcine epidemic diarrhea virus (PEDV) outbreaks on pig farms have caused significant economic loss in the swine industry since it was first reported in Thailand a decade ago. Anecdotal evidence suggests that PEDV is now endemic in this region, therefore genome information of circulating PEDV is important for molecula...

journal_title：PeerJ

authors： Tuanthap S,Vongpunsawad S,Phupolphan C,Duang-In A,Wattanaphansak S,Assavacheep P,Theamboonlers A,Luengyosluechakul S,Amonsin A,Poovorawan Y

更新日期：2019-04-30 00:00:00

abstract：Background:Stoichiometric relations drive powerful constraints in several fundamental ecosystem processes. However, limited studies have been conducted on the ecological stoichiometry of plants after the change of community composition induced by Stellera chamaejasme removal in alpine grassland in the Qinghai-Tibetan P...

journal_title：PeerJ

authors： Song M,Wang Y,Bao G,Wang H,Yin Y,Li X,Zhang C

更新日期：2020-06-23 00:00:00

abstract：:Avoidance behavior involves learning responses that prevent upcoming aversive events; these responses typically extinguish when the aversive events stop materializing. Stimuli that signal safety from aversive events can paradoxically inhibit extinction of avoidance behavior. In animals, males and females process safet...

journal_title：PeerJ

authors： Radell ML,Beck KD,Pang KC,Myers CE

更新日期：2015-07-14 00:00:00

abstract：Background:The spread of maize cultivation to the highlands of central Mexico was accompanied by substantial introgression from the endemic wild teosinte Zea mays ssp. mexicana, prompting the hypothesis that the transfer of beneficial variation facilitated local adaptation. Methods:We used whole-genome sequence data t...

journal_title：PeerJ

authors： Gonzalez-Segovia E,Pérez-Limon S,Cíntora-Martínez GC,Guerrero-Zavala A,Janzen GM,Hufford MB,Ross-Ibarra J,Sawers RJH

更新日期：2019-05-03 00:00:00

abstract：:The combination of different approaches has successfully delimited new species within many Neotropical species complexes traditionally classified as a single nominal organism. Recent studies have shown that the Amazonian endemic genus Amazophrynella, currently composed of 12 small-sized species, could harbor several a...

journal_title：PeerJ

authors： Mângia S,Koroiva R,Santana DJ

更新日期：2020-09-18 00:00:00

abstract：Background:Geographic variation in body size and condition can reveal differential local adaptation to resource availability or climatic factors. Body size and condition are related to fitness in garter snakes (Thamnophis), thus good body condition may increase survival, fecundity in females, and mating success in male...

journal_title：PeerJ

authors： Valencia-Flores E,Venegas-Barrera CS,Fajardo V,Manjarrez J

更新日期：2019-03-13 00:00:00

abstract：:Secondary cavity nesting (SCN) birds breed in holes that they do not excavate themselves. This is possible where there are large trees whose size and age permit the digging of holes by primary excavators and only rarely happens in forest plantations, where we expected a deficit of both breeding holes and SCN species. ...

journal_title：PeerJ

authors： Cuatianquiz Lima C,Macías Garcia C

更新日期：2016-03-15 00:00:00

abstract：:Much genomic-scale, especially transcriptomic, data on spider phylogeny has accumulated in the last few years. These data have recently been used to investigate the diverse architectures and the origin of spider webs, concluding that the ancestral spider spun no foraging web, that spider webs evolved de novo 10-14 tim...

journal_title：PeerJ

authors： Coddington JA,Agnarsson I,Hamilton CA,Bond JE

更新日期：2019-04-04 00:00:00

abstract：:The knowledge on the spatial distribution of soil available water capacity at a regional or national extent is essential, as soil water capacity is a component of the water and energy balances in the terrestrial ecosystem. It controls the evapotranspiration rate, and has a major impact on climate. This paper demonstra...

journal_title：PeerJ

authors： Hong SY,Minasny B,Han KH,Kim Y,Lee K

更新日期：2013-04-23 00:00:00

abstract：:According to the intelligence-creativity threshold hypothesis, there should be a positive association between intelligence and creative potential up to a certain point, the threshold, after which a further increase in intelligence should have no association with creativity. In the present simulation study, the measure...

journal_title：PeerJ

authors： Sorjonen K,Ingre M,Melin B

更新日期：2019-10-21 00:00:00

abstract：:The taxon Beloniformes represents a heterogeneous group of teleost fishes that show an extraordinary diversity of jaw morphology. I present new anatomical descriptions of the jaw musculature in six selected beloniforms and four closely related species. A reduction of the external jaw adductor (A1) and a changed morpho...

journal_title：PeerJ

authors： Werneburg I

更新日期：2015-02-24 00:00:00

abstract：BACKGROUND:Individuals with unilateral lower limb amputation have a high risk of developing knee osteoarthritis (OA) in their intact limb as they age. This risk may be related to joint loading experienced earlier in life. We hypothesized that loading during walking would be greater in the intact limb of young US milita...

journal_title：PeerJ

authors： Miller RH,Krupenevich RL,Pruziner AL,Wolf EJ,Schnall BL

更新日期：2017-02-02 00:00:00

abstract：Background:Due to intensive sluice construction and other human disturbances, lakeshore vegetation has been destroyed and ecosystems greatly changed. Rhizospheric microbiota constitute a key part of a functioning rhizosphere ecosystem. Maintaining rhizosphere microbial diversity is a central, critical issue for sustain...

journal_title：PeerJ

authors： Zhang X,Wang H,Li Z,Xie J,Ni J

更新日期：2020-09-29 00:00:00

abstract：Background:Medicare is one of the world's largest health insurance programs. It provides health insurance to nearly 44 million beneficiaries whose entitlements are based on age, disability, or end-stage renal disease (ESRD). Data of these ESRD beneficiaries are collected in the US Renal Data System (USRDS), which inclu...

journal_title：PeerJ

authors： Mu Y,Chin AI,Kshirsagar AV,Bang H

更新日期：2018-07-27 00:00:00